import java.util.Scanner;

public class Multiple {
    public static void main(String[] args) {
        Scanner input=new Scanner(System.in);
        System.out.println("请输入一个数");
        int a=input.nextInt();
        if (a%7==0){
            System.out.println("是7的倍数");}
            else {
            System.out.println("不是7的倍数");}


    }
}
